[Webkit-unassigned] [Bug 244540] [Xcode] Simplify sanitizer builds

[bugzilla-daemon at webkit.org]

https://bugs.webkit.org/show_bug.cgi?id=244540

--- Comment #1 from David Kilzer (:ddkilzer) <ddkilzer at webkit.org> ---
> This change is functionally equivalent to the old xcconfig files, except that WK_ASAN_DISALLOWED can't be used to disable ASan when building host-side tools.  (Previously, the xcconfig files from Tools were the "layer" that turned on the ENABLE_*_SANITIZER macros, but this model assumes those macros are enabled in the `xcodebuild` command, which can't be overridden to my knowledge.)

I need to check how `-useAddressSanitization` differs from `ENABLE_ADDRESS_SANITIZER=YES` when used on the xcodebuild command-line.

It may be possible that the former doesn't override variables in xcconfig files, in which case WK_ASAN_DISALLOWED=YES can just be replaced with ENABLE_ADDRESS_SANITIZER=NO in xcconfig files.

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